The excavation first revealed a series of silos dug into the alluviums of the Oise. Often containing rich quantities of beautifully crafted pottery, they are dated to the 5th century BC (Early La Tene). Some of the silos are up to 1.8 m in depth and had a grain or vegetable storage capacity of several cubic meters.
The second enclosure surrounds a 2300 m2 area and a narrower and shallower ditch. A few human skull fragments were found inside. This type of deposit, resulting from the manipulation of cadavers, is common in some Gallic farms.